let data = {
    students: [
        {
            name: "老王",
            age: 18
        },
        {
            name: "小李",
            age: 18
        },
        {
            name: "小赵",
            age: 18
        }
    ],
    goods: [
        {
            price: 19.9,
            title: '手机'
        },
        {
            price: 19.9,
            title: '手机'
        },
        {
            price: 19.9,
            title: '手机'
        }
    ]
}